🧹 Refactor indicator color assignment logic in PageControl

[jhurt]

🎯 What: Replaced duplicated if/else logic with concise ternary operators for setting indicator color in pageStateDidChange and addIndicator.
💡 Why: This makes the code DRY and improves maintainability and readability by using standard Swift idioms.
✅ Verification: Verified through code review that the refactored code is equivalent and doesn't change existing behavior.
✨ Result: A cleaner, more maintainable file with less redundant logic.

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PR created automatically by Jules for task 17562353124306916921 started by @jhurt

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